How to verify the license globally?

I added the following code to the index.php file in the theme, and it can prompt wp_die after verification.

But if this is written in every php file of the theme, is it too much trouble.

What kind of writing can be achieved: If the license is effective, the user will prompt the content of wp_die when visiting the website? functions.php? Can you give an example?

$api_params = array(
	'slm_action' => 'slm_check',
	'secret_key' => YOUR_SPECIAL_SECRET_KEY,
	'license_key' =>get_option('sample_license_key'),
);
// Send query to the license manager server
$response = wp_remote_get(add_query_arg($api_params, YOUR_LICENSE_SERVER_URL), array('timeout' => 20, 'sslverify' => false));
$license_data = json_decode(wp_remote_retrieve_body($response));
if($license_data->result == 'success'){
	get_header();
	?>

		<main id="primary" class="site-main">
			<?php

			if ( have_posts() ) :

				if ( is_home() && ! is_front_page() ) :
					?>
					<header>
						<h1 class="page-title screen-reader-text"><?php single_post_title(); ?></h1>
					</header>
					<?php
				endif;

				/* Start the Loop */
				while ( have_posts() ) :
					the_post();

					/*
					* Include the Post-Type-specific template for the content.
					* If you want to override this in a child theme, then include a file
					* called content-___.php (where ___ is the Post Type name) and that will be used instead.
					*/
					get_template_part( 'template-parts/content', get_post_type() );

				endwhile;

				the_posts_navigation();

			else :

				get_template_part( 'template-parts/content', 'none' );

			endif;
			?>

		</main><!-- #main -->

	<?php
	get_sidebar();
	get_footer();
} else {
	wp_die('The authorization code has expired or is not activated! ');
}